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Subtracting and transforming shapes

From: Photoshop CS5 One-on-One: Mastery

Video: Subtracting and transforming shapes

I've saved my progress as Shapes so far, found inside the 27_pen_tool folder. Thus far, we have added a series of shapes in order to fill out the light bulb. We've got two rectangles, one vertical, one horizontal. We've got one ginormous circle, and then two smaller circles on either side of the vertical rectangle. In this exercise, we are going to begin subtracting from our shapes in order to create this contoured edge along the left side and the right side of the light bulb. Now, this is going to involve not only subtracting one shape from another, but it's also going to involve a little bit of transforming shapes, that is, scaling and rotating them.

Subtracting and transforming shapes

I've saved my progress as Shapes so far, found inside the 27_pen_tool folder. Thus far, we have added a series of shapes in order to fill out the light bulb. We've got two rectangles, one vertical, one horizontal. We've got one ginormous circle, and then two smaller circles on either side of the vertical rectangle. In this exercise, we are going to begin subtracting from our shapes in order to create this contoured edge along the left side and the right side of the light bulb. Now, this is going to involve not only subtracting one shape from another, but it's also going to involve a little bit of transforming shapes, that is, scaling and rotating them.

When we get into the transformation territory, Photoshop starts having screen redraw problems. So, I'm just warning you about that upfront. If somehow you're not seeing what you should see on screen, just bear in mind that it's fairly normal behavior for the program right now. Anyway, I'm going to go ahead and scroll over to the left-hand side of the image a little bit. I'm going to grab my Ellipse tool, because we're going to be cutting a circle out of this area right there for starters. I'm going to switch to the Subtract Mode, so that we'd go about subtracting right off the bat from our existing shape.

So I'll switch to Subtract Mode. I should still see the Paths option selected. If it isn't selected for you, it may be because your vector mask is not active. So, make sure that it is here inside the Layers panel. Then, I'm going to drag with the tool like so, and I'm going to press the Shift key as I come in closer on that side of the shape, and I just forced an auto-scroll, which is unfortunate, because now I can't really see what I'm doing. But that's okay, once I get it more or less aligned like so, I'll go ahead and release, and I had the Shift key down the entire time, by the way, so I released the mouse button first, and then released the Shift key.

Sure enough, that circle is not big enough. I'm going to go ahead and select the Black Arrow tool, the Path Selection tool if you like. I'll click on the circle to select it. Then I'll go up to the Edit menu and I'll choose Free Transform Path. So notice as soon as you're working with a path outline, whether it's a shape outline what have you, it's going to say Free Transform Path to indicate that you're transforming a vector outline as opposed to pixels. It still has the same keyboard shortcut, Ctrl+T, Cmd+T on the Mac. I'm going to move the transformation origin over here to the right-hand point, so it snaps into alignment.

Then, while I drag this upper-left point, and I'm going to give myself a little more room to work, I'm going to press the Shift and Alt keys. The Shift key because I want to constrain the proportions to a circle, the Alt key or the Option key on a Mac, because I want to scale with respect to that transformation origin. All right, once I get about there, it looks like I have matched the edge pretty well. Now, this is a great example of how Photoshop does not keep up with your path outline transformations. It just doesn't. It's completely baffling, but it doesn't show things properly.

We are doing things properly, don't worry about that. It's just that the screen redraw is not keeping up. Now, you would expect that when you press the Enter key or the Return key in order to apply the transformation, then Photoshop would get with the program, but it doesn't. Now, notice over here in this little thumbnail, if you're seeing your thumbnails, and it very much helps to see them, which means that if you have smaller thumbnails going inside the Layers panel, I very much urge you to right-click in this lower region, where there are no layers, and choose Large Thumbnails. That way you can keep track of what's going on, at least a little bit, with your vector outlines.

Notice that I am cutting in just fine, so the screen redraw is out of whack. When I zoom out to a certain level, notice it shapes up. It says, oh yes! I'm sorry. That's where your edge really is. Unfortunately, when you zoom back in, it gets it wrong again. So, that's a little bit of a problem. We'll take care of it in a moment, but for now, we're just going to abide. I need to move this path outline over a little bit. I don't know what yours looks like, but mine is too far over to the left. So, I'm going to press the arrow key a couple of times to nudge it to the right like so, and then I'll zoom back out.

It looks like we've got this guy pretty much in the right position. We can always adjust that later once we get things roughed in a little bit, if we need to take that edge farther inward. Okay, what about this edge right there? Well, that remaining area from about here to about here is more or less a straight line, actually. So, I'm going to try to render it out using a rotated rectangle, which means it's going to require another transformation, which means we can anticipate further screen redraw issues.

But as I say, we'll take care of that momentarily. All right, so I'll switch over to the Rectangle tool, and then I'll just draw me a rectangle. It doesn't matter where it is, because it's nowhere near right. It should be set to Subtract though, which it is, so everything's good there. We're further subtracting from the shapes. I'll go back to my Black Arrow tool. I'll click on that rectangle in order to select it, and then I'll move it into position right there. It's that intersection that I'm looking for, I think. I think this is going to work out for us. Actually, it could be a little lower, couldn't it? I guess I'm going from the wrong area, I guess about right there is where the light bulb starts cutting away from that circle.

So that's what we want them at. We essentially want to create a straight edge that's tangent. In the case you don't know what tangent means, imagine that you have a straight line resting on a ball. That would be a tangent line, because it's just sitting on the ball, and the line is straight. So it's barely touching the circle of the ball. Anyway, it's right there. It'll cleave off of that circle and then meet onto that circle there. We're going to do that using, of course, the transformation. Now, you'll just have to take my word for it. This rectangle is still the same, because we can't see the corner points right now.

I'm going to press Ctrl+T or Cmd+T on the Mac to re-invoke that Free Transform command. I'm going to move my transformation origin right there, and then I'll move my cursor outside the rectangle and drag in order to rotate it until it comes into position at that location. So, this is a good tangent line, it looks to me. It just barely touches the top circle, and it just barely touches the bottom circle. Now, it goes too far. It cuts into the light bulb down right here, but I'm unconcerned with that because we can move the rectangle to a different location.

So, I'm going to press the Enter key or the Return key on the Mac, and watch in disappointment and horror, as the screen does not redraw properly. All right, anyway, I'm now going to move my shape upward, because I still have the Black Arrow tool selected. I'll move it to about there, so that we still have a nice tangent edge, and lo and behold we still have a little bit of an issue up here. Now that's not Photoshop's problem. That's not a redraw problem. That's my problem. I need to solve it. I'm going to do so by transforming a shape, and I'll show you which shape it is that we're going to transform, as well as show you how to go about flipping and duplicating these shapes over here on the left-hand side in order to cut away this region on the right- hand side, in the next exercise.

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This video is part of

Image for Photoshop CS5 One-on-One: Mastery
Photoshop CS5 One-on-One: Mastery

192 video lessons · 43836 viewers

Deke McClelland
Author

 
Expand all | Collapse all
  1. 40m 45s
    1. Welcome
      2m 45s
    2. Making Photoshop your default image editor
      7m 43s
    3. Installing the dekeKeys keyboard shortcuts
      8m 10s
    4. Remapping OS shortcuts
      7m 37s
    5. Installing the Best Workflow color settings
      4m 31s
    6. The color settings explained
      6m 54s
    7. Loading the CS5 color settings in Bridge
      3m 5s
  2. 1h 11m
    1. Your creative range continues to expand
      1m 46s
    2. The Avatar project so far
      2m 38s
    3. Painting on a photograph
      7m 50s
    4. Adding texture and depth
      6m 14s
    5. Simulating chalky white paint
      7m 23s
    6. Masking and placing an image
      7m 20s
    7. Upsampling and Lens Blur
      5m 9s
    8. Blending blurry elements
      3m 48s
    9. Making a Smart Object
      6m 46s
    10. Placing an image as a Smart Object
      3m 22s
    11. Blending away a background
      5m 56s
    12. Applying Smart Filters
      4m 34s
    13. Creating a glow with Lens Flare
      3m 45s
    14. Blending and masking a glow
      5m 3s
  3. 1h 26m
    1. Using the image to select itself
      1m 53s
    2. Introducing masking
      6m 32s
    3. Making an alpha channel
      6m 54s
    4. Using the Calculations command
      6m 48s
    5. Add, Subtract, Offset, and Scale
      5m 54s
    6. Prepping an image with the Dodge tool
      6m 55s
    7. Fixing mistakes before they get too big
      6m 32s
    8. Painting in the Overlay mode
      5m 51s
    9. Exaggerating and selecting flesh tones
      7m 39s
    10. Smudge, Median, and the Blur tool
      6m 59s
    11. Masking low-contrast details
      6m 7s
    12. Creating a flesh-and-clothing mask
      5m 45s
    13. Masking and compositing the foreground
      5m 27s
    14. Finessing the final composition
      7m 39s
  4. 2h 24m
    1. Connecting the dots
      1m 40s
    2. The Pen tool and the Paths panel
      6m 32s
    3. Drawing a straight-sided outline
      6m 25s
    4. Editing a path outline
      6m 36s
    5. Adding and editing smooth points
      5m 35s
    6. Creating vector masks with the shape tools
      4m 59s
    7. Building a complex outline from shapes
      4m 26s
    8. Subtracting and transforming shapes
      6m 45s
    9. Cloning, flipping, and combining shapes
      8m 58s
    10. Roughing in non-symmetrical paths
      7m 41s
    11. Finessing a complex outline
      9m 15s
    12. Masking a layer effect
      8m 26s
    13. Isolating an image element
      6m 8s
    14. Smooth points and control handles
      9m 3s
    15. Stretching curved segments
      7m 49s
    16. Using the Rubber Band option
      9m 33s
    17. Drawing smooth points with the Pen tool
      6m 59s
    18. Shading an isolated object
      3m 45s
    19. Drawing cusp points
      7m 14s
    20. Setting points in the pasteboard
      9m 57s
    21. Using the Convert Point tool
      6m 42s
  5. 2h 57m
    1. Everything you need to know about blending
      1m 45s
    2. Photoshop CS5's blend modes
      7m 21s
    3. Cycling between blend modes
      6m 15s
    4. Darken and Lighten and their derivatives
      6m 3s
    5. The blend mode shortcuts
      8m 6s
    6. The Multiply and Burn modes
      4m 28s
    7. The Screen and Dodge modes
      6m 0s
    8. How opposite blend modes work
      8m 24s
    9. Why Multiply darkens and Divide lightens
      5m 23s
    10. Cleaning up a client's bad art
      5m 3s
    11. Dropping out a white background
      5m 56s
    12. Blending inside blend modes
      8m 3s
    13. Overlay, Soft Light, and Hard Light
      6m 26s
    14. Vivid, Linear, and Pin Light (and Hard Mix)
      6m 35s
    15. Difference, Exclusion, Subtract, and Divide
      7m 34s
    16. Great uses for the Difference mode
      6m 18s
    17. Promising uses for the Divide mode
      9m 6s
    18. Hue, Saturation, Color, and Luminosity
      7m 0s
    19. Blending an inverted layer
      3m 32s
    20. The "Fill Opacity Eight"
      7m 25s
    21. Making bad blend modes good
      5m 16s
    22. Making a knockout layer
      6m 53s
    23. Blending in the CMYK mode
      8m 3s
    24. Overprinting black text
      8m 29s
    25. Using the Luminance slider
      5m 24s
    26. Parametric luminance masking
      6m 21s
    27. Adjusting the behavior of luminance effects
      10m 8s
  6. 2h 2m
    1. Smart Objects = protective containers
      1m 35s
    2. Placing an Illustrator graphic
      6m 30s
    3. Vector copy and paste options
      6m 56s
    4. Applying Puppet Warp to vectors
      8m 9s
    5. "Gluing" vector art for Puppet Warp
      5m 50s
    6. Warping art onto the surface of an image
      8m 7s
    7. Blending a Smart Object
      4m 30s
    8. Blurring and blending a Smart Object
      6m 8s
    9. Making changes in Illustrator
      5m 57s
    10. Creating "true clones"
      7m 18s
    11. Double-flipping text
      4m 44s
    12. Applying effects to multiple layers
      3m 24s
    13. Updating true clones in one operation
      7m 36s
    14. Editing JPEGs as Camera Raw objects
      5m 49s
    15. Creating a double-exposure effect
      7m 15s
    16. Masking and shading transitions
      7m 47s
    17. Applying and repeating Camera Raw edits
      6m 9s
    18. Copying vs. cloning a Smart Object
      5m 18s
    19. Flipping a Smart Object and its mask
      3m 42s
    20. Adjusting multiple Camera Raw clones
      3m 53s
    21. Text that inverts everything behind it
      5m 34s
  7. 1h 59m
    1. This time, "smart" means dynamic
      1m 37s
    2. Introducing Smart Filters
      6m 28s
    3. Traditional High Pass sharpening
      5m 17s
    4. Smart High Pass in the Lab mode
      7m 57s
    5. Sharpening a high-frequency image
      7m 46s
    6. Retroactively reducing noise
      7m 31s
    7. Which filters are Smart Filters?
      6m 20s
    8. Shadows/Highlights as a Smart Filter
      4m 37s
    9. Nesting one Smart Object inside another
      7m 11s
    10. Drawing a mask from a nested Smart Object
      8m 7s
    11. Better Shadows/Highlights inside Lab
      9m 16s
    12. Tempering saturation values in Lab
      7m 0s
    13. Filtering live, editable text
      9m 2s
    14. Enhancing filters with layer effects
      4m 33s
    15. Applying a filter multiple times
      5m 0s
    16. Creating a synthetic star field
      7m 7s
    17. Making a stucco or drywall pattern
      6m 28s
    18. Land, sea, and clouds
      8m 30s
  8. 2h 50m
    1. Photoshop's advanced painting tools
      2m 3s
    2. Canvas texture and brush libraries
      6m 40s
    3. Painting with a predefined custom brush
      9m 21s
    4. Dissecting a custom brush
      11m 9s
    5. Designing and using a custom brush
      4m 54s
    6. Saving and loading brush presets
      5m 27s
    7. The ten styles of bristle brushes
      9m 47s
    8. Size, Spacing, and Angle
      7m 2s
    9. Using the Bristle Brush preview
      7m 53s
    10. Bristles, Length, Thickness, and Stiffness
      6m 53s
    11. Stylus tilt and mouse behavior
      5m 25s
    12. Stroking a path outline with a brush
      4m 0s
    13. Troubleshooting a stylus
      5m 49s
    14. Introducing the Mixer Brush
      7m 22s
    15. The Load, Mix, and Wet values
      5m 1s
    16. Cleaning and loading a brush
      6m 26s
    17. Shading a piece of graphic art
      6m 34s
    18. Shading with color
      7m 53s
    19. Mixing a photographic portrait
      6m 11s
    20. Tracing the fine details in an image
      5m 52s
    21. Crosshatching and brush size
      5m 53s
    22. Covering up and augmenting details
      7m 36s
    23. Painting in hair and fabric
      5m 54s
    24. Painting and scaling very fine hairs
      8m 7s
    25. Adding texture with the Emboss filter
      8m 31s
    26. Exploiting a "happy accident"
      2m 46s
  9. 1h 40m
    1. Artificial intelligence that works
      1m 22s
    2. The Auto-Align Layers command
      7m 25s
    3. The Auto-Blend Layers command
      3m 54s
    4. Masking auto-aligned layers
      4m 50s
    5. The Geometric Distortion setting
      6m 44s
    6. The Seamless Tones and Colors checkbox
      4m 8s
    7. Creating the best possible layer mask
      9m 18s
    8. Auto-blending depths of field
      5m 54s
    9. Finessing masks, accepting imperfections
      6m 29s
    10. Shooting and downsampling panorama images
      5m 54s
    11. Introducing the Photomerge command
      6m 40s
    12. Evaluating the Layout settings
      6m 47s
    13. Loading, aligning, and blending with Photomerge
      5m 36s
    14. Tracing and extracting seams
      7m 18s
    15. Adding a masked element into a panorama
      5m 55s
    16. Simplifying and correcting a panorama
      5m 58s
    17. Smart Filters and nondestructive cropping
      6m 43s
  10. 1h 18m
    1. The most mysterious of mysterious topics
      2m 29s
    2. Introducing HDR Toning
      6m 43s
    3. Reigning in clipped highlights
      5m 54s
    4. The Local Adaptation options
      9m 5s
    5. Nondestructive editing with HDR Toning
      8m 22s
    6. Using the HDR Toning Curve
      7m 2s
    7. HDR Toning vs. Shadows/Highlights
      6m 0s
    8. Merging multiple exposures
      7m 14s
    9. A first look at HDR Pro
      6m 24s
    10. Removing ghosts, correcting backlighting
      7m 11s
    11. Generating and editing an HDR comp
      7m 0s
    12. HDR rendered to completion
      5m 19s
  11. 1h 27m
    1. Processing hundreds of files in no time
      1m 43s
    2. Creating an action set
      6m 37s
    3. Making an action
      7m 7s
    4. Stop, Delete, and Record
      7m 12s
    5. Add, Undo, and Rerecord
      6m 40s
    6. Playing and testing an action
      6m 31s
    7. Playing and editing a specific operation
      6m 39s
    8. Permitting the user to change settings
      4m 58s
    9. Explaining an action with a custom stop
      5m 0s
    10. Batch-processing multiple images
      7m 22s
    11. Adding a Save As operation
      6m 34s
    12. Creating an action to save web graphics
      7m 59s
    13. Batching two actions into one
      7m 15s
    14. Saving and loading actions
      5m 30s
  12. 1m 19s
    1. See ya
      1m 19s

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